Generally speaking, when I see questions like this my first piece of advice is to talk to the original provider. Explain what has been happening and see what they think. They're in the best position to troubleshoot what might be going on because they have (or should have) most of the answers to the questions I listed above.
If your original provider is dismissive of your problem or otherwise not helpful, I'd sign a records release and get a copy of your treatment record to date. From there I'd find a few other local providers - you can use NCCAOM.org's 'Find a Practitioner' lookup to get locally licensed and board-certified providers. Take your treatment record to them, explain your original issue and what happened during treatment with your first provider and see what the new provider thinks.